Alien Species24 Videos

Salpa maxima

Salpa maxima also arrived in the upper Tyrrhenian Sea or lower Ligurian Sea, that is, in the waters of Livorno and the province where we often dive. It is a Tunicate; at first sight it looks like a cross between a fish and a jellyfish but it is neither, it is actually a transparent invertebrate belonging to the order of the Salpidae subphylum Tunicata, coming from the deepest oceans and very rare in the Mediterranean....

Red Lionfish

The Red Lionfish (Pterois volitans) is a fish venomous who live coral reef in the family Scorpaenidae, order Scorpaeniformes. Pterois volitansis natively found in the Indo-Pacific region, but has become an invasive problem in the Carribbean Sea, as well as along the East Coast of the United States.

Spotted sea hare

The Spotted sea hare, Aplysia dactylomela, is a species of large sea slug, a marine opisthobranch gastropod in the family Aplysiidae, the sea hares. As traditionally defined, this species of sea hare was cosmopolitan, being found in almost all tropical and warm temperate seas, including the Mediterranean Sea where first seen in 2002 and likely self-established due to increasing temperatures.

Fanworm - Sabella spallanzanii

European Fanworm is one of the easiest organisms to encounter during a dive or more simply when you go underwater at any depth. However, it is almost impossible not to stop and admire it trying to observe it ...

Ostreopsis ovata and Caulerpa racemosa

While I was trying to film some sea anemones Anemonia sulcata and Actinia equina, I found a toxic alga: Ostreopsis ovata, and an alien alga: Caulerpa in clusters, Caulerpa racemosa. ...

Rockpool shrimp - Palaemon elegans

Palaemon elegans sometimes known by the common name rockpool shrimp, is a species of shrimp of the family Palaemonidae. Gamberetto di porto Palaemon elegans Rockpool shrimp intotheblue.it ...

Yellowmouth barracuda - Sphyraena viridensis

Mediterranean Barracuda or Yellow-mouth Barracuda (Sphyraena viridensis) is an endemic species of Mediterranean Sea, although many consider it an alien species ...

SOS Mediterranean sea and Oceans

This video was made on 11 June 2021 in the reefs of Lighthouse Vada near Livorno, over 6 miles from the coast of Castiglioncello at a depth of over 42 meters. ...

Red Lionfish

Red Lionfish (Pterois volitans) is a fish venomous who live coral reef  in the family Scorpaenidae, order Scorpaeniformes. Pterois volitansis natively found in the Indo-Pacific region, but has become an invasive problem in the Carribbean Sea ...

Sea Snot or marine Mucilage

Effects of climate change in the Mediterranean Sea. The sea Snot or Mucilage caused by marine heating. Nobody can deny that the warming of our planet Earth is now evident even to those who still harbor doubts and uncertainties ...

Crown-of-thorns Starfish

Crown-of-thorns starfish, Acanthaster planci, is a large starfish that preys upon hard, or stony, coral polyps (Scleractinia). The crown-of-thorns starfish receives its name from venomous thorn-like spines that cover its upper surface, ...

Excessive Proliferation of Sea Walnuts for Marine Heating

In this website we show you, through underwater videos and photographs, the beautiful things that we find under the surface of the sea ...

Pinna Nobilis and Haplosporidium Pinnae

During a scuba diving in a seabed of about twenty meters of sand and rock, I found a specimen of Noble Pen Shell, Pinna Nobilis, probably affected by the parasite Haplosporidium Pinnae. ...

Curious fishs visit the Diver in decompression

At the end of a scuba dive, during the decompression stop they suddenly came to visit me these nice "intrusive" friends. ...

Toxic algae: Ostreopsis ovata

We are in Sardinia, Capu Mannu, at the beginning of the Sinis peninsula Oristano province ...

Mucilage Cyanobacteria Oscillatoriales Algae

Mucilage on the coast of Livorno in the sea between Castiglioncello and Marina di Castagneto. ...

Invasion of Mnemiopsis leidyi

This video made on August 20, 2019 documents the invasion of Mnemiopsis leidyi ...

Ctenophora - Mnemiopsis leidyi

Mnemiopsis leidyi, the warty comb jelly or sea walnut, is a species of tentaculate ctenophore (comb jelly). ...

She is a Predator…! Even if it does not seems

The sea Walnut (Mnemiopsis leidyi) is a ctenophore belonging to the Bolinopsidae family. The Mnemiopsis ...

Caulerpa Racemosa

Caulerpa Racemosa is a green alga from the Caulerpaceae family. It is native to the Red Sea, but it is an allochthonous species of the Mediterranean Sea ...

Red Lionfish - Pterois volitans

Red Lionfish (Pterois volitans) is a fish venomous who live coral reef  in the family Scorpaenidae, order Scorpaeniformes ...

Fenicotteri Rosa - Phoenicopterus roseus

This species native to Africa has found its ideal habitat in the south of Sardinia in the brackish waters of Cagliari and its surroundings ...

Alien Species - Percnon gibbesi

It is called Percnon gibbesi. It is an "alien" crustacean spotted in the Mediterranean, for the first time in 2009, in Linosa, but probably already present ...

Sea Walnut - Mnemiopsis leidyi

We also met us Mnemiopsis leidyi or Sea Walnut, which would seem one of many jellyfish found in the seas ...